20480013 has 8 divisors (see below), whose sum is σ = 30340800. Its totient is φ = 13653324.

The previous prime is 20480011. The next prime is 20480027. The reversal of 20480013 is 31008402.

It is a happy number.

It is not a de Polignac number, because 20480013 - 2¹ = 20480011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20480011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379233 + ... + 379286.

It is an arithmetic number, because the mean of its divisors is an integer number (3792600).

Almost surely, 2^20480013 is an apocalyptic number.

It is an amenable number.

20480013 is a deficient number, since it is larger than the sum of its proper divisors (9860787).

20480013 is an equidigital number, since it uses as much as digits as its factorization.

20480013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758528 (or 758522 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 20480013 is about 4525.4848359043. The cubic root of 20480013 is about 273.5962093581.

Adding to 20480013 its reverse (31008402), we get a palindrome (51488415).

The spelling of 20480013 in words is "twenty million, four hundred eighty thousand, thirteen".